Build Identifier: http://hg.mozilla.org/mozilla-central/rev/9366ee039645 Mozilla/5.0 (Windows NT 6.1; WOW64; rv:26.0) Gecko/20100101 Firefox/26.0 ID:20130915030208 This is similar Bug 915301 but, Bug 915301 did not fix the problem. The glitch is still existing.

Can't reproduce locally on Linux x64. Which platform are you running? Windows x64? There might issues on ARM, but the patches for bug 915301 and bug 915495 should have solved major glitches on x64 and x86. I will try a debug build to run the checks on Google Maps.

(In reply to Benjamin Bouvier [:bbouvier] from comment #1) > Can't reproduce locally on Linux x64. > > Which platform are you running? Windows x64? There might issues on ARM, but > the patches for bug 915301 and bug 915495 should have solved major glitches > on x64 and x86. I will try a debug build to run the checks on Google Maps. See Build Identifier in comment #0 Nightly26.0a1 win32 build running on Windows7 x64.

WAIT, It seems another regression.

The regression range in comment #0 is wrong. (Sorry :bbouvier) The correct regression rabge is as follows. There are 2 regression #1 Rendering glitch while zoom in/out Most of the glitch disappear immediately. #2 Rendering glitch while zoom in/out and the glitch remain. #1 Regression window Good: http://hg.mozilla.org/integration/mozilla-inbound/rev/2d06025ea63d Mozilla/5.0 (Windows NT 6.1; WOW64; rv:26.0) Gecko/20100101 Firefox/26.0 ID:20130813150135 Bad: http://hg.mozilla.org/integration/mozilla-inbound/rev/46f7b11d2594 Mozilla/5.0 (Windows NT 6.1; WOW64; rv:26.0) Gecko/20100101 Firefox/26.0 ID:20130813151137 Pushlog: http://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=2d06025ea63d&tochange=46f7b11d2594 Regressed by: 46f7b11d2594 Guillaume Abadie — bug 900767 - Implement the WebGL extension ANGLE_instanced_arrays - r=jgilbert #2 Regression window Good: http://hg.mozilla.org/integration/mozilla-inbound/rev/2be3551a5d80 Mozilla/5.0 (Windows NT 6.1; WOW64; rv:26.0) Gecko/20100101 Firefox/26.0 ID:20130906171346 Bad: http://hg.mozilla.org/integration/mozilla-inbound/rev/356866ae2f68 Mozilla/5.0 (Windows NT 6.1; WOW64; rv:26.0) Gecko/20100101 Firefox/26.0 ID:20130906172546 Pushlog: http://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=2be3551a5d80&tochange=356866ae2f68 Regressed by: 356866ae2f68 Jeff Gilbert — Bug 883478 - Update ANGLE to pull from 13-08-02. r=upstream,bjacob,bas

Chrome had this bug too, turns out it's a bug in ANGLE which has been recently fixed: https://code.google.com/p/angleproject/issues/detail?id=467 ANGLE_instanced_arrays support should be disabled until ANGLE can be updated with the fix. This is causing crashes for me, so it could be a security issue (https://crash-stats.mozilla.com/report/index/8c066237-e2ac-426b-8356-841ef2130916)

remote: https://hg.mozilla.org/integration/mozilla-inbound/rev/b18761961ffd

Comment on attachment 805777 [details] [diff] [review] patch: Disable divisor support on ANGLE [Approval Request Comment] Bug caused by (feature/regressing bug #): bug 883478 User impact if declined: Broken rendering on Google Maps, etc. Testing completed (on m-c, etc.): on m-i Risk to taking this patch (and alternatives if risky): very low String or IDL/UUID changes made by this patch: none

This is said to fix the highly visible crash in bug 921196, I hope this gets uplifted to Aurora soon.

I am not able to reproduce the bug on the build from comment 0. Alice can you verify this is fixed on latest Aurora?

I cannot also reproduce the problem on the bad build. Probably the site modified something on their side. Anyway, I can verify the problem is not happen on the latest Aurora26.0a2 anymore.

Thanks Alice.

verified with Nightly build 20131024030204 on win 7